Vlad/ddtracepy 315 profiling native

[vlad-scherbich]

prev: #19257 | next: #19251

Summary

Native profiling py3.15 ABI (Echion frame state, cmake).

Test plan

• CI green on this branch
• Stack merges cleanly into the next PR's base branch

[cit-pr-commenter-54b7da]

Circular import analysis

⚠️ Existing circular imports

There are 33 circular imports that already exist on the base branch and have not been changed by this PR.

Show existing cycles (showing 5 of 33 shortest)

ddtrace.internal.datastreams -> ddtrace.internal.datastreams.kafka -> ddtrace.internal.datastreams
ddtrace.internal.datastreams -> ddtrace.internal.datastreams.google_cloud_pubsub -> ddtrace.internal.datastreams
ddtrace.internal.datastreams -> ddtrace.internal.datastreams.kombu -> ddtrace.internal.datastreams
ddtrace.internal.datastreams -> ddtrace.internal.datastreams.aiokafka -> ddtrace.internal.datastreams
ddtrace.internal.core -> ddtrace._trace.span -> ddtrace.internal.core

To see all cycles, download the cycles-base.json and cycles-pr.json artifacts from this CI job and run:

uv run --script scripts/import-analysis/cycles.py compare cycles-base.json cycles-pr.json

[cit-pr-commenter-54b7da]

Codeowners resolved as

ddtrace/internal/datadog/profiling/cmake/FindLibNative.cmake            @DataDog/profiling-python
ddtrace/internal/datadog/profiling/cmake/NativeHeaders.cmake            @DataDog/profiling-python
ddtrace/internal/datadog/profiling/dd_wrapper/src/sample.cpp            @DataDog/profiling-python
ddtrace/internal/datadog/profiling/ddup/CMakeLists.txt                  @DataDog/profiling-python
ddtrace/internal/datadog/profiling/stack/CMakeLists.txt                 @DataDog/profiling-python
ddtrace/internal/datadog/profiling/stack/echion/echion/cpython/tasks.h  @DataDog/profiling-python
ddtrace/internal/datadog/profiling/stack/fuzz/CMakeLists.txt            @DataDog/profiling-python
ddtrace/internal/datadog/profiling/stack/src/echion/frame.cc            @DataDog/profiling-python
ddtrace/internal/datadog/profiling/stack/test/CMakeLists.txt            @DataDog/profiling-python
ddtrace/internal/datadog/profiling/stack/test/test_cpython_layout_contracts.cpp  @DataDog/profiling-python
ddtrace/internal/datadog/profiling/stack/test/test_frame_state_315.cpp  @DataDog/profiling-python